package com.blogs.common.utils;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import lombok.extern.slf4j.Slf4j;

import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;

/**
 * Description 使用response输出JSON
 *
 * @author hubiao
 * @since 2020-09-28 10:53
 */
@Slf4j
public class ResponseUtils {

    /**
     * 使用response输出JSON
     *
     * @param response
     * @param result
     */
    public static void out(ServletResponse response, ApiResult result) {
        PrintWriter out = null;
        try {
            response.setCharacterEncoding( "UTF-8" );
            response.setContentType( "application/json" );
            out = response.getWriter();
            out.println( JSON.toJSONString( result ) );
        } catch (Exception e) {
            log.error( e + "输出JSON出错" );
        } finally {
            if (out != null) {
                out.flush();
                out.close();
            }
        }
    }

    /**
     * 响应内容
     *
     * @param httpServletResponse
     * @param msg
     * @param status
     */
    public static void getResponse(HttpServletResponse httpServletResponse, String msg, Integer status) {
        PrintWriter writer = null;
        httpServletResponse.setCharacterEncoding( "UTF-8" );
        httpServletResponse.setContentType( "application/json; charset=utf-8" );
        try {
            writer = httpServletResponse.getWriter();
            writer.print( JSONObject.toJSONString( new ApiResult( status, msg, null ) ) );
        } catch (IOException e) {
            log.error( "响应报错", e.getMessage() );
        } finally {
            if (writer != null) {
                writer.close();
            }
        }
    }
}
